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single_metric_handler.go
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/
single_metric_handler.go
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/*
* Copyright 2018- The Pixie Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* SPDX-License-Identifier: Apache-2.0
*/
package metrics
import (
"context"
"fmt"
"px.dev/pixie/src/api/go/pxapi/types"
"px.dev/pixie/src/e2e_test/perf_tool/experimentpb"
)
type singleMetricHandler struct {
resultCh chan<- *ResultRow
spec *experimentpb.SingleMetricPxLOutput
}
// HandleInit implements the pxapi.TableRecordHandler interface.
func (h *singleMetricHandler) HandleInit(ctx context.Context, metadata types.TableMetadata) error {
return nil
}
// HandleRecord implements the pxapi.TableRecordHandler interface.
func (h *singleMetricHandler) HandleRecord(ctx context.Context, r *types.Record) error {
row := newResultRow()
ts, err := getColumnAsTime(r, h.spec.TimestampCol, "SingleMetricPxLOutput.TimestampCol")
if err != nil {
return err
}
row.Timestamp = ts
val, err := getColumnAsFloat(r, h.spec.ValueCol, "SingleMetricPxLOutput.ValueCol")
if err != nil {
return err
}
row.Value = val
row.Name = h.spec.MetricName
for i, tagCol := range h.spec.TagCols {
tagVal, err := getColumnAsString(r, tagCol, fmt.Sprintf("SingleMetricPxLOutput.TagCols[%d]", i))
if err != nil {
return err
}
row.Tags[tagCol] = tagVal
}
select {
case <-ctx.Done():
case h.resultCh <- row:
}
return nil
}
// HandleDone implements the pxapi.TableRecordHandler interface.
func (h *singleMetricHandler) HandleDone(ctx context.Context) error {
return nil
}